Home > Undefined Reference > Linking Error Undefined Reference To Vtable

Linking Error Undefined Reference To Vtable

Contents

and they do give you __declspec(novtable) to suppress the proliferation of v-tables. didnt expect it to be that dumb. It's definitely not here - the question is if it is in the .cc file. You can find me everywhere Spaced-out numbers What could make an area of land be accessible only at certain times of the year? navigate to this website

Just realized it's already mentioned above, but heck it might help someone. Difficult limit problem involving sine and tangent Just a little change and we're talking physical education Publishing a mathematical research article on research which is already done? It's any unresolved method. The same as for Frank above. pop over to these guys

Error Undefined Reference To Vtable For Qt

When is it okay to exceed the absolute maximum rating on a part? Also make sure you change your makefile to accomodate/add the new .o file that is built from the new .cpp file you just created. In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms

Red balls and Rings The Dice Star Strikes Back 4 dogs have been born in the same week. c++ Steve superjacent 1 66 posts since Nov 2007 Community Member 10Contributors 10Replies 20Views 8 YearsDiscussion Span 6 Years Ago Last Post by sheldonrobinson 1 Featured Reply vijayan121 1,152 8 Years And defining a virtual destructor in this derived class made no difference (it is defined in the base class). Undefined Reference To Vtable Qobject As a side effect, please note that only for this particular virtual function you won't get the traditional linker error like you are missing function foo.

I'll add that detail to my original post. –RyanG Jun 17 '10 at 20:31 add a comment| 19 Answers 19 active oldest votes up vote 192 down vote The GCC FAQ The Vtable Symbol May Be Undefined Because The Class Is Missing Its Key Function share|improve this answer answered May 10 at 20:35 ShitalShah 10.4k15246 add a comment| up vote 1 down vote I got this error in the following scenario Consider a case where you Had this problem using g++ and cmake, with code that compiled fine in studio. –Nicolas Holthaus Sep 30 '14 at 18:06 add a comment| up vote 8 down vote I had navigate here Browse other questions tagged c++ linker g++ eclipse-cdt or ask your own question.

This error is caused because the linker in gcc is unable to find the functions you have defined in your headers in your actual code. Undefined Reference To `typeinfo For You'll probably find that you may have forgotten to define a virtual function ForgottenFunc in your fake class. obj\Debug\main.o||In function `fourSided':| C:\Users\Eric\Desktop\Code\Programs\instincts physics\main.cpp|40|undefined reference to `vtable for fourSided'| C:\Users\Eric\Desktop\Code\Programs\instincts physics\main.cpp|40|undefined reference to `vtable for fourSided'| C:\Users\Eric\Desktop\Code\Programs\instincts physics\main.cpp|51|undefined reference to `vtable for fourSided'| C:\Users\Eric\Desktop\Code\Programs\instincts physics\main.cpp|51|undefined reference to `vtable for fourSided'| How do you get a dragon head in Minecraft?

The Vtable Symbol May Be Undefined Because The Class Is Missing Its Key Function

virtual void foo(Many params, As part, Of veryLong, Method signature); and theirs: virtual void foo(Many params, As part, Of veryLong, Method signature) const; When merging I picked the first version, but i thought about this Good luck! Error Undefined Reference To Vtable For Qt When linking libraries into an executable they are done in the order they are declared. Undefined Reference To Vtable For Constructor That the derived class destructor is implemented inline.

I couldn't find a solution for 2 hours. –problemofficer Nov 24 '10 at 16:13 1 Thanks, this was exactly what was wrong with me. –Chance Mar 16 '11 at 17:14 useful reference The others are obvious, and thus unhelpful. –Edgar Bonet Jun 10 '14 at 11:20 | show 1 more comment up vote 21 down vote Undefined reference to vtable may occur due How it works: Take all the object files and combine them into an executable Resolve any dependencies among object files. thanks so much. =] –user2619631 Jul 25 '13 at 18:20 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up Undefined Reference To Vtable For C++

Join them; it only takes a minute: Sign up Linker error: undefined reference to vtable [duplicate] up vote 2 down vote favorite This question already has an answer here: What is You can now reproduce the error by removing = 0 in IBase.hpp. As the constructors and destructors can be empty, I recommend you just add them to the class definition in the header file: class Machine { public: Machine() {} // Constructor with http://softacoustik.com/undefined-reference/linker-error-undefined-reference-vtable.php share|improve this answer answered Jun 21 '10 at 18:22 RyanG 1,20631222 18 In brief : the .cpp just wasn't included in the build.

I just added Interval::~Interval(){} and it worked! –Amir Oct 11 '11 at 0:39 add a comment| up vote 1 down vote I had the same problem. Undefined Reference To Vtable For Destructor Remember, arguments types differentiate functions just like names in C++, a Collide(Shape) is different from a Collide(Polygon). more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

How to decipher Powershell syntax for text formatting?

I removed the inline effect of the derived class destructor, made that into a method definition in the cpp file and presto, compilation succeeded. These causes doesn't seem to be true. int year; // vintage year public: VintagePort(); VintagePort(const char *br, int b, const char *nn, int y); VintagePort(const VintagePort &vp); ~VintagePort() {delete [] nickname;} void Show() const; friend ostream & operator<<(ostream Undefined Reference To Vtable For Class C++ share|improve this answer answered Nov 4 '14 at 16:28 Bretzelus 314 add a comment| up vote 2 down vote This is a terrible error because it seems people have seemingly assumed

Thanks for sharing! What does the pill-shaped 'X' mean in electrical schematics? Log in to Reply george says: June 16, 2013 at 17:33 Thnx!!u helped me very much! 🙂 Log in to Reply Gianni Comoretto says: July 30, 2013 at 18:27 I hit http://softacoustik.com/undefined-reference/linker-error-undefined-reference-to-vtable-for.php Just a little change and we're talking physical education Specific word to describe someone who is so good that isn't even considered in say a classification Players Characters don't meet the

Kio estas la diferenco inter scivola kaj scivolema? Notice that you don't have to specify .hpp files anywhere in CMakeLists.txt. The problem was that I declared a virtual destructor in the header file, but the virtual functions' body was actually not implemented. share|improve this answer edited Jun 18 '10 at 21:15 answered Jun 17 '10 at 20:06 Alexandre Hamez 3,13421528 7 nm -C CGameModule.o | grep CGameModule:: will list the methods that

Note that a destructor must be defined even if it is declared pure-virtual [class.dtor]/7. This error also arises in gcc if a class is inherited from a class in non included library but added include file. 0 athena_1 6 Years Ago Thanks. Omitting it didn't make a difference to compilation, but if you think it's a good idea, then thanks for the advice! My compiler is giving me a string of … Very simple Boost program giving me "undefined reference"? 5 replies Hi, does anyone know why I am getting these error messages?

I included boost (v1.39.0) libraries already. What do you call "intellectual" jobs? Ended up spending 4+ hours in trying to find out what else could be wrong... –ShitalShah May 10 at 18:29 In my case we had abstract class that didn't current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list.

and to prevent the non-creation of a v-table by the compiler, at least one of the non-pure virtual functions will have to be defined out-of-line. My groupproject suddenly stopped accepting new cpp files from one of my libs, it was all about undefined reference, then I switched positions and it worked as a charm. Sieve of Eratosthenes, Step by Step Why aren't there direct flights connecting Honolulu, Hawaii and London, UK? I keep getting a vtable linker error for a class that doesnt involve any virtual functions.

How to decipher Powershell syntax for text formatting? When we link with l1 next all four dependencies are resolved. i knew it was something dumb i was doing.